Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:30:13 2012 Optimize a model with 294 rows, 823 columns and 823 nonzeros Model has 586 quadratic constraints Presolve removed 0 rows and 21 columns Presolve time: 3.42s Presolved: 294 rows, 802 columns, 802 nonzeros Variable types: 586 continuous, 216 integer (215 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 141.0000000 - - - 3s 0 0 0.00000 0 105 141.00000 0.00000 100% - 3s 0 0 0.00000 0 135 141.00000 0.00000 100% - 3s 0 0 0.00000 0 117 141.00000 0.00000 100% - 3s 0 2 0.00000 0 102 141.00000 0.00000 100% - 3s H 41 41 30.0000000 2.10000 93.0% 45.8 3s * 44 44 24 24.0000000 2.10000 91.2% 50.0 3s 603 283 12.00000 6 499 24.00000 10.10638 57.9% 34.4 5s * 689 307 32 23.0000000 10.10638 56.1% 45.4 6s 1202 444 21.87271 34 398 23.00000 10.10638 56.1% 52.1 10s H 2626 636 22.0000000 13.47273 38.8% 43.6 14s 2738 644 16.91124 29 472 22.00000 13.58333 38.3% 43.8 15s 3403 714 cutoff 39 22.00000 14.63445 33.5% 42.4 20s 4493 741 20.03147 35 448 22.00000 15.66972 28.8% 40.2 25s * 5022 658 41 21.0000000 16.06818 23.5% 39.8 28s 5644 550 cutoff 38 21.00000 16.87500 19.6% 38.6 30s 6759 151 19.19358 35 456 21.00000 18.85414 10.2% 38.0 35s Explored 6944 nodes (266186 simplex iterations) in 35.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%